VEHICLE CONTROL UNIT HAVING A MICROCONTROLLER THE SUPPLY VOLTAGE OF WHICH IS MONITORED AND ASSOCIATED METHOD

摘要

A vehicle control unit has a microcontroller, to which multiple analog supply voltages are applied, and a monitoring unit for the functional monitoring of the microcontroller. The microcontroller includes an A/D converter for the conversion of the plurality of analog supply voltages into digitized supply voltages. A computing area of the microcontroller which is computationally secured is provided for monitoring the digitized supply voltages of the microcontroller. The plurality of digitized supply voltages are monitored in the area as to whether they lie within predetermined tolerance ranges.